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DL7BCA Germany flag Germany

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First licensed as HB9MJV in 1973 and then HB9BCA in 1974 (if my memory serves me right).

Active in Switzerland until 1981, then moved to Oxforshire / UK and licensed as G5EDZ, later G0EDZ.

Moved to Germany in 1998. Licensed as DL7BCA in 2010.

Mostly operate on Shortwave. Love maintaining and operating old Heathkit tube equipment. Dabble in antenna construction.

Member of DARC in Karlsruhe / DOK A07 and of USKA Solothurn (H26 County: SO)in Switzerland.


Transceiver / Receiver: Yeasu FT1000-MP / Drake TR7 / R7 / RV-7 / Matchbox: MN-2700.

Power Amplifier: Drake L-7. Heathkit: HW-101 / SB-102 / SB-220 / Scanalyzer SB-620 / HW-8 (not shown)


Measurement equipment corner: mostly secondhand Hewlett Packhard, still the best !


Antennae: Cushcraft ATB-34 / 11m Ground-Plane / 80-40m Inverted V

Here my aerials in Spring 2012:

Left (background) 11.11 m long ground plane. On the roof a Cushcraft ATB-34 tribander (20 / 15 / 10 m), boom 5.37m, longest element 9.8m. The telescopic aluminium mast is supported with 3mm diameter "Dyneema" guy ropes (breaking load 5000 N).

Attached to the antenna mast (below the Ham-II rotor) a shortened Inverted-Vee (27m long) for 80m / 40m



Mobile operation with IC-7000 from 160m to 70 cm, with Hi-Q Piranha antenna (attached to towing-hook) and 2m/70cm magmount (modified Kathrein), tested up to 235 km/h (146 m.p.h).

Towhook attachment

Centre-Console: Ameritron Screwdriver- and Endstage Controllers. Boot: Ameritron ALS-500M Endstage (ca. 400 W). 

What text?


Thanks for looking me up - cu on the air!

73 Martin

Links to the University of Karlsruhe

There University of Karlsruhe (now Karlsruhe Institute of Technology or KIT, my place of work) has links to two famous scientists involved in the discoveries which make our hobby possible.

1.) Heinrich Hertz, discovered the existence of electromagnetic waves in Karlsruhe, where he was a professor from 1885- 1889.


2.) Karl Ferdinand Braun was Professor at theUniversity of Karlsruhe between 1883 and 1887. He invented the cathode ray tube (Braun'sche Röhre) and received, together with Marconi, the Nobel price in 1909 for his contributions to wireless telegraphy. He was also the first man who understood and used "phased arrays", as he described amongst other things in his Nobel-lecture in 1909.


7292691 Last modified: 2016-05-05 12:01:11, 6890 bytes

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